docs: def _check_domain(tokens) -> bool:
          """
          Check if the email provider should be filtered
          Args:
              tokens:
  
          Returns: Bool
          """
  
          idx = None
          for e in tokens:
              if e.text == "@":
                  idx = e.i
                  break
          if not idx or tokens[idx+1].text in FILTER_PROVIDER:
              return False
          else:
              return True